beuther



2 Sheets-Sheet 1.

(No Model.)

0, REUTHER.

AUTOMATIC WEIGHING MAGHINE.

Patented July 31'. 1883.

N. PETERS. Phowumo m hen Wnhinnmfl n C.

(No Model.) 2 SheetsSheet 2.

G. REUTHER.

AUTOMATIC WEIGHING MACHINE.

No. 282,226. Patented July 31, 1883.

UNITE STATES PATENT Di ries.

CARL REUTHER, or HENNEF, rRUssIA, GERMANY.

AUTOMATIC WElGHlNG-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 282,226, dated July 31,1883.

I Application filed June 19, 18 82. (No model.)

To all whom it may concern:

Be it known that I, CARL REUTHER, of

Hennef, in the Kingdom of Prussia, German Empire, have invented certainnew and useful Improvements in Automatic Weighing-Machines for WeighingGranular and Iulverous Substances; and I do hereby declare that thefollowing is a full and exact description thereof.

This invention relates to certain improvements on weighing-machines forwhich a patent, No. 261,257, was granted to me July 18, 1882.

The accompanying drawings represent what I consider the best means ofcarrying out my present improvements.

Figures 1 to 4 represent the scale for weighing granular and pulveroussubstances. Figs. 5 and 6 illustrate the scale for weighing liquids.Fig. l is a side elevation of the entire scale for granular materials.Figs. 2, 3, and 4 represent the feed mechanism of the same in threedifferent positions on a larger scale.

Similar letters of reference indicate corresponding parts at the samepoint in all the figures.

A represents the weighing-beam; B, the re ceptacle; O, the tray for theweights; D, the feed hopper, from which the grain passes through thespout (1 into the receptacle 13. Below the spout d are two swingingflaps, F and G. The flap F has notches f in its edge, and serves toreduce the supply of grain or the like at intervals, while the flap Geffects periodically the complete cutting off of the grainsupply. Theplate gr has a knife-edge, 2, which rests on the cup h of the rail H,which, if moved up or down, allows the flap G to swing upon theknife-edges g. The rail I-I rests with its lower end on a knife-edge, onthe lever I, which is pivoted to the receptacle B, and carries a weight,a. A rod, K, connects the lever I with a lever, L, which is pivotedloosely at mthe axis of the hinged door M, by the opening of which thereceptacle B is emptied. The door M is secured by means substantially asshown in the patent herein before referred to.

I employ a small adjustable weight, V,which serves to change theposition of the center of gravity of the feed-flap G. This weight V isadjustably arranged upon an arm, 12, that is rigidly connected to theflap G and to the weight P. A pinching-screwserves to hold the weightVinits properly-adjusted position on the arm n.

In order to prevent a change of the pressure of the knife-edge 2 on itsbearing, in case of any accidental derangement of the entire machine outof its properly-leveled position, I arrange a pendulum, E, on the centerof oscillation or knife-edge y of the flap G. A pin, 1', fixed to theflap G, acts upon this pendulum and presses the same upward, when boththe flaps F and G are opened. (See Fig. 2.) The pressure of both theflaps F and G and of the pendulum E acts, through the knife-edge 2, uponthe rail H; but when the flap F rests upon the pin w the knife-edge z isonly affected by the flap G and the pendulum E, and when the pendulum issuspended vertically said knife-edge is only acted upon by the flap G.As explained in my above-mentioned patent, the correctness of theweighing is dependent partly upon the leverage of the center of gravityof the flap G at the time when the latter alone acts upon the knife-edgez, and consequently upon the beam A. WVhen the flap G is closed so as toentirely out off the flow of grain, as shown in Fig. 4:, this functionwill not be disturbed by an accidental tipping oi the machine, as theflap turns on the knifeedge and is so balanced by means of the weightsand pendulum as to always swing beneath the spout.

The index a", which is opposite the index. a of the beam, is not fixedto the frame-work of the automatic scale, but is rigidly connected to apendulum, U, the axis of which coincides exactly with the axis of thebeam A. In consequence of this arrangement the two indexes a and a* willalways be opposite each other when the beam A assumes its equilibrium,even if the properly-leveled position of the scale should have beendisturbed. The beam A has knife-edges (0*, a, and (E, which bear upon aprojection on the receptacle B, a part of the fixed framing, and theweighttray, respectively, as shown in Fig. 1.

The discharge-flap of the vessel is held closed by means of the hook O.The link K is directly connected with the flap M. The longitudinal slotit permits the lever I to be drawn downward by the hand or otherwise,and to be hooked under S when the flap M is closed, so that the scalemay be brought into equilibrium, ready to receive grain.

The weighing-machine is provided with a mechanism which interrupts theoperation as soon as the feed or discharge mechanisms cease inconsequence of some accident, to perform their functions properly. Thismechanism consists of a bell-erank lever, S, which turns on center 8,fixed to the vessel I The lever S is fitted with a notch, 8 which holdsthe lever I up, and prevents the receptacle from opening until saidlover I is released from the notch. .9". The pin. 9, projecting from theflap (l, bears, when the flap G is closed, against the lever S, andpresses the latter so far to one side that the lever I can pass thenotch s without obstruction, thus allowing the flap M to open. In case alarge object should be caught in the channel (I of the hopper l), whichwould prevent the closing of the flap G, the flap M cannot open,although the vessel B is filled, and descends and liberates the hook 0,because the pin of the flap (1 cannot press aside the lever S, so thatthe lever I will remain hooked at s" on the lever S. The flap 1* carriesa pin,

f,whieh prevents the flap (.lfrom closing completely so long as the flapI? is not completely closed, and consequently a complete interruption ofthe operation takes place also in case the flap F should not closecompletely. In case the discharge-flap M should by any accident beliberated from the hook 0 before the flaps Fand G are completely closed,or in case the hook 0 should not engage with the flap M after thedischarge of the vessel has taken place, the engagement of the lever Iwith the lever S would still arrest the operation.

I claim as my invention 1. In an automatic scale, substantially asdescribed, the feed-flap G, having a principal weight, I, and anadjustable weight,V, as and for the purposes set forth.

2. In an automatic scale, substantially as described, the pendulum U,carrying the coulr ter-index for the index of the beam, as herein setforth.

3. In an automatic scale, substantially as described, the pendulum 1*],arranged to control the position of the flap (l, as and for the purposeset forth.

4. In an automatic scale, constructed and operating substantially asdescribed, the link K, directly connected with the discharge-flap H, asand for the purpose herein set forth.

5. In an automatic scale, substantially as described, the safetyarrangement consisting of the hook a on the lever S, in combination withthe lever I and its connections, and with suitablyarranged pins on theflaps F and G,

herein set forth.

In testimony whereof I have hereunto set my hand, at Cologne, Irussia,this id day 01: May, 1882, in the presence of two subscribing witnesses.

(lAjR-L RE'IfTllTER.

\Vi tnesses:

AUG USI I seem, MAX BECK.

